In order to locate the position of the plate accurately, in this paper, a precise license plate locating algorithm is proposed based on mathematical morphology. Firstly, after gray level transformation of the color plate image, Sobel operator is used to detect the edge of the car image, Secondly, the methods of erosion and closing operation in mathematical morphology are adopted to process the binary image, and several candidate license plate areas are obtained. Then, removing false license plate area by the line scanning method to achieve coarse location of license plate. Finally, Hough trans...
